Do such things exist? I can only find filters for incoming water, not what goes down the drain. Plenty of plug strainers with big holes for debris and hair, but will let mud sediment and grit right through.
I have no outdoor space to wash muddy gear. No outdoor space at all, in fact, and nowhere public to reasonably do it either, let alone with water and lighting. When I drive to ride (which is most of the time), I generally rinse things down before packing up the car to come home. But sometimes that doesn’t happen, or I ride from home, so I end up at home with dirty kit to be cleaned off in the bath. Draining the bath without letting the sediment down, and then wiping up the sediment to dispose of separately is tedious. And washing it down is I fear would clog the pipes up eventually.
So I would like some fine washable maybe fabric filter like you have on a vacuum cleaner, to go over the plug hole.